Eccentric-fastening.



F. P. SASAMAN.

BGGENTRIC FASTEN-ING.

APPLICATION r1 LED JAN. '1,-1910.

Patented Dec.20, 1910.

WITNESSES j Mx? sito.

FRANK P. SASALVIAN, OF WEST PITTSTON, EENNSYLVANIA.

ECCEN'IBIC-FASTENING.

To all whom it may concern:

Be itl known that l, FRANK P. SASAMAN, a citizen of the United States,and a resident of Test Pittston, in the county of Luzerne and State ofPennsylvania, have invented a new and improved Eccentric-Fastening, ofwhich the following is a full, clear, and exact description.

Considerable di'liiculty has been experienced in fastening theeccentrics of a locomotive on the axle of the driving wheels so thatthey will not work loose or slip, and yet be easily removed. andapplied, as when making repairs. l have been able to over come thisdifficulty by my invention, which embodies a key having an inner portionfitting into a key-way in the axle, and an outer portion fitting into akeysway of the eccentric, as is usual, but with that portion itting intothe eccentric tapering toward each end, with its widest portion at ornear the center.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a section through an axle or shaft showing an eccentricsecured thereto as contemplated by my invention; Fig. 2 is a section onthe line 2-2 of Fig. 1; Fig. 3 is an inner face view of the key; Fig. 4is a sect-ion on the line 4-4 of Fig. 1; and Fig. 5 is a side view ofone of the set-screws.

For the purpose of illustrating the nature and application of myimprovements, l have shown an axle or shaft 10, provided with alocomotive eccentric 11, of conventional form, the eccentric consistingof two sections having a joint arranged diainetrically of the axle,separating the enlarged and smaller portions of the eccentric, the twosections being detachably connected together by studs 12, which arethreaded into the smaller section of the eccentric and pass into theusual openings 13, formed in the opposite section of the eccentric,where each is provided with a slot receiving a tapered key le, drawingthe two sections of the eccentric together.

For securing the eccentric to the shaft or axle I provide a key 15 andset-screws 16, the key having an inner portion which is shown to beabout one-half the depth of the thickness of the key, and of uniformwidth,

Specification of Letters Patent.

Application le. January 7, 1910.

Patented Dec. 20, 1910.

Serial No. 586,828.

ftted into a longitudinal key-way formed 1n the shaft, and the outerportion relatively wider than the inner portion and tapering from apoint at or near the center toward each end, the widest portion of thispart of the key being at the center. With the key thus constructed andlocated centrally relatively to the enlarged section of the eccentric,as shown, it is impossible for the eccentric to slide longitudinally onthe shaft, and 05ers a greater resistance to the eccentric turning onthe shaft than the ordinary key, in view of the shoulders 17 presentedby the under side of the outer portion of the key seating and supportedon the periphery of the shaft, as shown in Fig. 1. To make the securityof the eccentric complete, the setscrews at the opposite sides of thekey are provided. These set-screws are radially arranged and threaded asubstantial distance into the shaft, each set-screw having a conicalbody portion 16a, tting in a corresponding opening formed in theenlarged section of the eccentric, and at its outer portion providedwith a lock-nut 1S, which bears against the eccentric and prevents thescrew from working loose, this being further insured by the conicalbodies of the screws binding in the like openings in the eccentric. Theset-screws are passed into the openings 13 formed in the side of theeccentric through holes 19 drilled radially through the circumferentialportion.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. The combination of a shaft, an eccentric arranged on the shaft, and akey having the inner portion fitted into a longitudinal key-way in theshaft, with the outer portion of the key enlarged near the center andtapering toward each end and fitted into a key-way in the eccentric.

2. The combination of a shaft, an eccen tric arranged on the shaft, anda key having the inner portion fitted into a longitudinal key-way in theshaft, with the outer portion of the key enlarged near the center andtapering toward each end and fitted into a key-way in the eccentric,with the under side of the outer portion of the key presenting shouldersseating on the shaft.

3. rFhe combination of a shaft, a member arranged on the shaft, and akey having the inner portion fitted into a longitudinal member andrelatively Wider :1t an interi mediate point than at the ends.

In testimony whereof l have signed my nume to this specification in thepresence of two subscribing Witnesses.

FRANK P. SASAMAN. Witnesses H. J. MAHON, J. G. LEWIS.

